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US 8,948,085 B2Granted
Methods and apparatus for best-effort radio backhaul among cells on unlicensed or shared spectrum
AssigneeQUALCOMM Incorporated
InventorsAlan Barbieri, Naga Bhushan, Peter Gaal
Life of this patent
Estimating the term…
Abstract
Methods and apparatus for wireless communication are described. A first base station may provide first backhaul information using a shared channel to a second base station. The shared channel may be white space channels, Authorized Shared Multiuser (ASM) channels or an Instrumentation, Scientific, and Measurement (ISM) channels. The first base station may further provide second backhaul information using a legacy backhaul channel.
Claims62
A method for wireless communication, comprising:
- selecting a shared channel for use as a first backhaul channel for a first point-to-point connection having a first time interval for transmitting first control information suitable for the first backhaul channel between a first wireless node and a second wireless node, the shared channel being selected based at least in part on an absence of a primary user on a set of shared channels, primary user information provided by a database, a signal metric of the shared channel, or a combination thereof;
- sending, from the first wireless node, the first control information via the first backhaul channel;
- determining a second backhaul channel established as a second point-to-point connection having a second time interval that is greater than the first time interval for transmitting second control information suitable for the second backhaul channel between the first wireless node and the second wireless node;
- and
- sending, from the first wireless node, the second control information via the second backhaul channel, the first control information and the second control information being used to coordinate transmission of the first wireless node and the second wireless node.
2 more elements
A non-transitory computer-readable medium including instructions stored thereon, comprising:
- instructions for causing a computer to select a shared channel for use as a first backhaul channel for a first point-to-point connection having a first time interval for transmitting first control information suitable for the first backhaul channel between a first wireless node and a second wireless node, the shared channel being selected based at least in part on an absence of a primary user on a set of shared channels, primary user information provided by a database, a signal metric of the shared channel, or a combination thereof;
- instructions for causing the computer to send, from the first wireless node, the first control information via the first backhaul channel;
- instructions for causing the computer to determine a second backhaul channel established as a second point-to-point connection having a second time interval that is greater than the first time interval for transmitting second control information suitable for the second backhaul channel between the first wireless node and the second wireless node;
- and
- instructions for causing the computer to send, from the first wireless node, the second control information via the second backhaul channel, the first control information and the second control information being used to coordinate transmission of the first wireless node and the second wireless node.
2 more elements
An apparatus for wireless communication, comprising:
- at least one processor configured to:
- select a shared channel for use as a first backhaul channel for a first point-to-point connection having a first time interval for transmitting first control information suitable for the first backhaul channel between a first wireless node and a second wireless node, the shared channel being selected based at least in part on an absence of a primary user on a set of shared channels, primary user information provided by a database, a signal metric of the shared channel, or a combination thereof;
- send, from the first wireless node, the first control information via the first backhaul channel;
- determine a second backhaul channel established as a second point-to-point connection having a second time interval that is greater than the first time interval for transmitting second control information suitable for the second backhaul channel between the first wireless node and the second wireless node;
- and
- send, from the first wireless node, the second control information via the second backhaul channel, the first control information and the second control information being used to coordinate transmission of the first wireless node and the second wireless node;
- and
- memory coupled to the at least one processor.
5 more elements
An apparatus for wireless communication, comprising:
- means for selecting a shared channel for use as a first backhaul channel for a first point-to-point connection having a first time interval for transmitting first control information suitable for the first backhaul channel between a first wireless node and a second wireless node, the shared channel being selected based at least in part on an absence of a primary user on a set of shared channels, primary user information provided by a database, a signal metric of the shared channel, or a combination thereof;
- means for sending, from the first wireless node, the first control information via the first backhaul channel;
- means for determining a second backhaul channel established as a second point-to-point connection having a second time interval that is greater than the first time interval for transmitting second control information suitable for the second backhaul channel between the first wireless node and the second wireless node;
- and
- means for sending, from the first wireless node, the second control information via the second backhaul channel, the first control information and the second control information being used to coordinate transmission of the first wireless node and the second wireless node.
2 more elements
A method for wireless communication, comprising:
- receiving, at a second wireless node, first control information via a first backhaul channel established as a first point-to-point connection having a first time interval for transmitting the first control information suitable for the first backhaul channel between a first wireless node and the second wireless node, the first backhaul channel being provided on a shared channel, the shared channel being selected based at least in part on an absence of a primary user on a set of shared channels, primary user information provided by a database, a signal metric of the shared channel, or a combination thereof;
- and
- receiving, at the second wireless node, second control information via a second backhaul channel established as a second point-to-point connection having a second time interval that is greater than the first time interval for transmitting the second control information suitable for the second backhaul channel between the first wireless node and the second wireless node, the second backhaul channel being a legacy backhaul channel, and the first control information-and the second control information being used to coordinate transmission of the first wireless node and the second wireless node.
A non-transitory computer-readable medium including instructions stored thereon, comprising:
- instructions for causing a computer to receive, at a second wireless node, first control information via a first backhaul channel established as a first point-to-point connection having a first time interval for transmitting the first control information suitable for the first backhaul channel between a first wireless node and the second wireless node, the first backhaul channel being provided on a shared channel, the shared channel being selected based at least in part on an absence of a primary user on a set of shared channels, primary user information provided by a database, a signal metric of the shared channel, or a combination thereof;
- and
- instructions for causing the computer to receive, at the second wireless node, second control information via a second backhaul channel established as a second point-to-point connection having a second time interval that is greater than the first time interval for transmitting the second control information suitable for the second backhaul channel between the first wireless node and the second wireless node, the second wireless backhaul channel being a legacy backhaul channel, and the first control information and the second control information being used to coordinate transmission of the first wireless node and the second wireless node.
An apparatus for wireless communication, comprising:
- at least one processor configured to:
- receive, at a second wireless node, first control information via a first backhaul channel established as a first point-to-point connection having a first time interval for transmitting the first control information suitable for the first backhaul channel between a first wireless node and the second wireless node, the first backhaul channel being provided on a shared channel, the shared channel being selected based at least in part on an absence of a primary user on a set of shared channels, primary user information provided by a database, a signal metric of the shared channel, or a combination thereof;
- and
- receive, at the second wireless node, second control information via a second backhaul channel established as a second point-to-point connection having a second time interval that is greater than the first time interval for transmitting the second control information suitable for the second backhaul channel between the first wireless node and the second wireless node, the second wireless backhaul channel being a legacy backhaul channel, and the first control information and the second control information being used to coordinate transmission of the first wireless node and the second wireless node;
- and
- memory coupled to the at least one processor.
3 more elements
The apparatus of 53, wherein the legacy backhaul channel includes a licensed wireless channel or a wired channel;
- and
- wherein the shared channel includes a White Space (WS) channel, an Instrumentation, Scientific, and Measurement (ISM) channel or a shared licensed channel.
The apparatus of 53, wherein the at least one processor is further configured to adjust a transmission from a second wireless node by at least one of:
- beamforming a transmitted signal based at least in part on the first control information;
- adjusting transmission scheduling based at least in part on the first control information;
- or
- a combination thereof.
1 more element
The apparatus of 53, wherein the at least one process is further configured to receive a signal from a user equipment (UE) served by the first wireless node and adjust the transmission based at least in part on information decoded from the received signal.
The apparatus of 53, wherein the first and second wireless nodes are evolved node Bs (eNBs) and the first control information includes a first set of coordinated multipoint (CoMP) information usable for controlling the transmission of the second wireless node.
The apparatus of 57, wherein the CoMP information includes at least one of:
- transmission scheduling information;
- channel state information (CSI) associated with at least one user equipment (UE) scheduled by the first wireless node or associated with the first wireless node;
- or
- priority information associated with at least one user equipment (UE) scheduled by the first wireless node or associated with the first wireless node.
1 more element
The apparatus of 53, wherein the second control information includes a second set of CoMP information.
The apparatus of 53, wherein the first wireless node is a relay node and the second wireless node is a base station.
An apparatus for wireless communication, comprising:
- means for receiving, at a second wireless node, first control information via a first backhaul channel established as a first point-to-point connection having a first time interval for transmitting the first control information suitable for the first backhaul channel between a first wireless node and the second wireless node, the first backhaul channel being provided on a shared channel, the shared channel being selected based at least in part on an absence of a primary user on a set of shared channels, primary user information provided by a database, a signal metric of the shared channel, or a combination thereof;
- and
- means for receiving, at the second wireless node, second control information via a second backhaul channel established as a second point-to-point connection having a second time interval that is greater than the first time interval for transmitting the second control information suitable for the second backhaul channel between the first wireless node and the second wireless node, the second wireless backhaul channel being a legacy backhaul channel, and the first control information and the second control information being used to coordinate transmission of the first wireless node and the second wireless node.
Dependencies are inferred from the claim text.